Warp creel



Ott 31, 1939. R H* BALCH ET AL 2,177,855

WARP CR EEL Original Filed Jan. 6, 1936 bis ` Patented Oct. 31, 1939 j UNITED STATES WARP CREEL Ralph H. Balch and Thomas C. CampbelLCumberland, Md., assignors to Celanese `Corporation of America, a corporation of Delaware Original application January 6, 1936, Serial No. 57,746. Divided and this application January 26, 1937, Serial No. 122,334

4 Claims.

This. invention relates to a device for forming warps from threads and especially for forming warps fromthreads wound on bobbins or spools.

This application is a division of my applicar) tions. No. 57,746 filed January 6, 1936.

" An `object of the invention is the provision of a device for the economic production of warps wherein a uniform tension exists on each warp end'.' Another` object of the invention is the lo provision of a device for the production of vwarps 'from continuous lament threads wherein there is less breaking of the filaments than by methods heretofore employed. Other objects of the inventionvwillV appear from the following dem tailed description.

Fig. 1 is aside view of a creel constructed in accordance with our invention.

Fig. 2 is a front View of a part of the device shown in Fig. 1.

Fig. 3 is a front view in detail of the roller guides that form the heads of the device.

vIn yforming warps, especially when the thread is supplied wound on spools, it has been `customaryto build the warp sheet in sections on a warp mill, which sheet was built in a varying number of sections from two up. The present invention, whichprovides as a source of threads,

two or three times more spools than heretofore possible, in the same amount of floor space and Ia uniform individual tension on each thread 4permits the forming` of warp sheets in but two to four sections which formerly were made in 4 to 12 sections.

To overcome the objections to forming warps in a multiplicity of sections, there has been developed cone creels. These, however, besides requiring a large amountl of ilocr space and a large investment, also necessitate the additional costly processng step of rstconing the yarn from spools. Attempts have also been made to place two or more spool Creels, one in front of the other, in order to supply enough thread to reduce the number of sections. This has not been successful, due to 'the excessive strain` put on the warp mill and because of the space required between these creels for access to the spools, which space `caused the threads of one creel to cross the threads cf the other creel at `quite a large angle. The crossing of the threads 5u makes the work of the operator more difcult -in obtaining his lease, locating and tying in broken ends, etc., and also induces an undue amount of chafing, resulting in broken filaments that slub up on the guides and other parts of 55 the device.By employing this invention, the

`the tension VonV each individual end is reduced,

threads from the spools run substantially par- U allelto eachother, which reduces the amount of chafing and overcomes the difficulties of the operator.

A further advantage of this invention is that the warp sheet from the creel may be run directly to a ,slashing4 device, thereby dispensing with the warp mill and itsl two rei-winding operations. A still further advantage of this in- `vention is that Vthe device is compact, eiecting an w economy in floor space.

Creels, employed `prior to 'this invention, that were adapted to use spooled thread, produced a large number of `broken filaments, especially on low twist yarn. Broken filaments in threads of 15l low twist are caught by the yarn guides and hunched up,resulting finally in a slub on the thread on a broken thread. Some of 'these vbroken laments were caused by the thread coming from the spools on the lower part of the creel rubbing againstthe threads on the spools on the upper part of the creel. As the direction of travel of the unwound thread is in the opposite direction Vfrom the rotation of the spool against which it rubs, considerable abrasive action takes place, especially when the creel is run at a normal speed of about 100`yards per minute, making a relative speed between these `two threads of about 200 yards per minute. The

device forming a part of this invention is constructed in such a manner that the threads of the lower spools are guided away from contact with threads on the upper spoolswithout increasingthe space between the spools.

A further advantage of this invention lis that ya creel for packaged threads such as bobbins or spools comprising two sets or banks of thread package holders which are arranged in such a manner that the sheets of threads coming from each bank leave the creel in relatively closely spaced, substantially parallel planes. Each bank of the creel is provided with a set of roller guides,

one roller for each substantially vertical row of packages, which guides are constructed for adjustment to an angle from the horizontal line of the warp sheet for the purpose of guiding the threads coming from one vertical row of packages away from contact with the adjacent Vertical row of packages. This arrangement permits a large number of threads, running substantially parallel to each other to be drawn, without chaiing, from the creel to a warp mill, slashing device or directly to a warp beam.

This invention may be employed in forming warps or warp-like packages from any suitable type of individual thread or package. It is particularly applicable, however, in forming warps from spooled threads formed of substantially continuous laments such as the cap-spun spooled thread produced on synthetic yarn spinning or forming devices. For instance, the invention is particularly applicable to the formation of wal'ps from threads containing substantially continuous laments of silk, reconstituted or regenerated cellulose and/orv organic derivatives of cellulose. The organic derivatives of cellulose may be, for example, the organic acid esters of cellulose or cellulose ethers. Examples of organic acid esters of cellulose are cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while examples of cellulose ethers are methyl cellulose, ethyl cellulose and benzyl cellulose.

The supply packages, to be used on the creel, may be of any suitable type, such as spools, bobbins, pins and like packages. The invention is, however, particularly applicable to the formation of warps from cap-spun bobbins or lspools. The cap spun bobbins or spools may have the thread wound thereon as said thread is delivered from a synthetic yarn spinning device. These bobbins or spools may contain from less than 1/16 of a pound to a pound or more of thread, which thread may have a twist of from less than one to four or more turns per inch. Threads having high degree of twist, say from four to seventy turns per inch may also be formed into warps by employing a device constructed in accordance with our invention.

Although the invention is of particular importance in the formation of warps from low denier threads, such as those containing continuous laments of silk, reconstituted or regenerated cellulose, or organic derivatives of cellulose, the same may be employed in the formation of warps from higher denier threads such as those formed from cotton, wool, linen or other textile material. For instance, in employing threads of such a denier that formerly two sections were placed upon a warp mill to form a complete warp, by employing this invention the complete warp may be made in one section. Also, where the threads employed were of a low denier requiring six or more sections to be placed on a warp mill to form a complete warp, by employing this device the number of sections may be reduced 50% or even more.

In the drawing there is shown a device constructed in accordance with our invention. This device may comprise a main frame I in crosssection, resembling an inverted V. The legs 2 and 3, of which there may be any suitable number of pairs that form the inverted V, may be suitably attached to each other by a pivot rod or by suitable pivot pins 4. The pivot rod 4 may run the full length of the device and join all the legs in pairs or each pair of legs may be provided with an individual pin. The pivot rod 4 preferably passes through eyes 5 formed in the upper ends of the legs 2 and 3.

A plurality of pairs of legs 2 and 3 forming inverted V members may be suitably spaced and connected to each other by means of horizontal or cross pieces 8. Suitably attached to the cross pieces 8 on each side of the device are strip members II. The strip members II may be provided with a plurality of pins I2 adapted to be inserted in the hub of a spool or bobbin to support the same. In place of pins I2 there may be provided any other suitable support for the particular type of supply packages employed. The pins I2 may be stationary or rotatable and may be formed of any suitable material such as wood, steel, vulcanized fiber, etc. The strips II are placed on the cross members 8 at a slight angle to the vertical and are so spaced that threads coming from the spools mounted on the bottom pins I2 may clear the spools mounted on the top pins I2 of the adjacent row.

On the main frame, for instance, on the legs 2 are suitable brackets I3 spaced at suitable intervals across the device, which brackets are connected to each other by an angle iron or other suitable member I4. Mounted upon the angle iron I 4 above each substantially vertical row of spool supporting pins I2 is a bracket and bearing member I5 which may consist of a base I6 having two upright arms Il and I8 projecting therefrom, The arms I'I and I8 are connected by a pin or axle adapted to support a roller I9. The bracket I 5 is preferably attached to the cross member I Ll by means of suitable screws 2|. For the purpose of adjusting the angle that the roller I9 makes with a line passing through a row 0f pins I2, there may be provided set screws 20 threaded into the member I4 and bearing against the base I6 of the roller support. The roller member I9 is adapted to guide the threads coming from one row of spools to a comb 22. By means of the set screws 20 or other suitable device, such as shims, the roller I9 may be set at an angle to the horizontal, thus causing it to guide the threads in such a manner that the thread coming from the bottom spool of one row does not touch the yarn wound upon the top spool of an adjacent row. This greatly reduces the number of broken filaments in that it prevents a rubbing contact between the thread travelling up to the roller guide and the yarn on the rotating spools. Arms 24 may be provided at each end oi the device suitably attached to the leg 3 by means of brackets 25, which arms have attached thereto brackets or upright members 26. The members 26 may be connected together by an angle iron or other suitable support I4, which support may have mounted thereon roller guides I9 in the same manner as described above. Also mounted on the arms 24 may be suitable frame members 29 also adapted to support a suitable comb 22 and thread detector 28. Adjustments of the combs may be made by means of adjustment screws 3l while adjustment of the frames 2'I and 29 may be made by means of slots 30.

For the purpose of positioning the creel in front of a leasing device, a warp mill, a Warp beam or slashing device, there are provided suitable wheels 32 mounted on suitable axles 33 and 34. For the purpose of adjusting the angle of the banks of spools such that the warp sheets Will register with the device upon which the threads are being wound, and such that a balance between tension and jumping of spools may be maintained, there may be provided an adjustjing vmeansoperating on the lowerends of the the slide 4 l 4legs 2 and 3. VThe adjusting mechanisinmay comprise `a female slide member 38 pivotally connected to the leg 3 by a suitable retainingbolt 35 and a male slide member 4I pivotallyconnected to the leg 2 by a suitable retaining bolt 42." The `free end of the slide 4I is, formed` having aslot `43 adapted to receive an ear 44 formed on the `slide t8.- -An ear 45`may also befprovided Yon The ear 44 may be provided with a bearing adapted to receive a thrust bearing 45 of a threaded rod 41. The ear 45 may be pro- 'vided with a' threaded opening adapted tore- By turn- 'bins 36 are placed upon the two'banks of supporting pins I2, thus-formingtwo banks kof `spooled packages of thread." I-'hese banks 'are so arranged that the supply packages are -run in substantially vertical rows spaced sufciently warp beam, warp mill or slashing device.

far apart to allow the withdrawal of thread from one row of spools between that row of spools and, `the adjacent row of spools. The group of threads coming from one row of spools isled over the roller I9, threaded through the electrical thread detector 28 and comb 22 and thus on to a guide roller or through. aleasing comb forming a part of any suitable winding device, for instance, By arranging the two banks of supply packages in the form of an inverted V the distance between the guide rollers above one bank of the V and the guide rollers above the other bank of the V is relatively small. By having the distance between the two sets of guide` rollers relatively small, the yarns coming from both sets of guide rollers to a comb or guide roller on the warp winding device travel in substantially parallel lines without crossing each other or without frequently engaging with each other. The two sheets of warp threads coming from the two sets of guide rollers move with an equal-speed in the same direction, thereby preventing any possibility oi one thread abrading another to break individual laments in the threads.

The threads 3l may be drawn over the guide rollers I9 to any suitable type of warp-winding device. For instance, the threads may be drawn over the rollers I9 to a combof a type normally employed in a leasing device when forming warps in a sectional manner upon a warp mill or the threads may be drawn to a heddle and then on to a warp mill or directly on to a Warpbeam. The threads may also be drawn over the rollers I9 directly to 4a warp beam or rst to a comb and then on to a warp beam. In placey of the warp beam. the threads may pass either directly into a slashing device of the type normally employed in the `sizing of warps, or the threads may first pass through a comb or other guide and then into a Slasher.

In place of strips II there maybe employed a solid sheet of material having mounted thereon pins or pegs I2 suitably spaced and arranged to form supports for the rows of spools. The pins I2 may be formed of any suitable material, for instance, wood, metal or vulcanized liber. The roller guides I9 may be made of metal, glass or vulcanized iiber and they may be mounted upon supporting axles or they may be otherwise suitably journaled into the upright members of the brackets I6. friction, it is preferable to support the rollers I9 be of any conventional design. b may be in sections `of suitable size to accom.-

modate the threadsffrom one row of spools or For the purpose of reducing `onball-bearings ori other anti-friction bearings.

The combs 22 and the thread detectors `28 may they may be in larger sections, each section being adjustable. Othenmodiiications of the device from that shown in the drawings may be made without departing from the spirit of my invention; "Provision may be made for groundelectricity.

Our device forming a part of the invention employin-g roller guides in` sections corresponding to the substantially vertical rows of spools,l

The combs v22 1,10 ing the device to prevent `the storage of` static produces a warp having less broken and otherwise dei-lective ends and a warp in which each end has the same tension. The tension of yarn passing over stationary guides variesV approximately in direct proportion `with the arc of icontact. Due to the short distance betweenthe top f row of bobbins and the guide the arc of .con-

ltact between thread and guide varies from 70 Vto 140 as the yarn unwinds from the top to the bottom. of the traverse. f Also in employing L25 threads of low twist which'pass over the guides `in' the form of ribbons along with threads of i on all yarns to practically nothing, thus permitting the marking of a Warp with a lower and even amount of stretch on each yarn. There is also but a fraction of the strain on the mills when employing our device that would be placed on other devices winding the same number of ends.

The tensions obtained by employing this invention are lower and show less fluctuation than those obtained with any other type of bobbin creel. As the roller is turning at the same speed as the yarn travels, thev arc of ,contactA or the percentage of the circumference of the roller which is in contact With the yarn, has absolutely no bearing on the tenson produced. Also by setting the individual rollers at a slight angle, it`

verted V, the legs of which frame are pivotally attached to one another, means attached to said legs for moving the legs relative to each other so as to enable the height at which the threads are led from the creel to be varied, and means on each leg of the frame for supporting a bank of supply packages, the construction and arrangement being such that a` ribbon of threads leaving the supply packages on one leg of said frame lies in' a separate plane which is substantially parallel and in close proximity to the plane in which lies a ribbon of threads from the supply packages on the other leg of said frame.

2. A warping creel for forming ribbons I of threads from a plurality of thread supply packages, comprising a frame in the form. of an in- Verted V, means on each leg of the frame for supporting a bank of supply packages, rollers on said legs, one for each ribbon of threads made lup of threads from a vertical row of supply packages, for guiding the threads coming from each bank of supply packages, and means for adjusting said rollers angularly with respect to the horizontal, the construction and arrangement being such that a ribbon of threads from the supply packages on one leg of said frame lies in a separate plane which is substantially parallel and in close proximity to the plane in which lies a ribbon of threads from the supply packages on the other leg of said frame.

3. A warping creel for forming ribbons of threads from a plurality of thread supply packages, comprising a frame in the form of an inverted V, means on each leg of the frame for supporting a bank of supply packages, rollers on said legs, one for each ribbon of threads made up of threads from a Vertical row of supply packages, for guiding the threads coming from each bank of supply packages, a mounting for each of said rollers, screw means for securing said mounting to one of said legs, and screw means at each end of said mounting for adjusting the angular position of said mounting and said roller with reference to the horizontal, the construction and arrangement being such that a ribbon of threads from. the supply packages on one leg of said frame lies in a separate plane which is substantially parallel and in close proximity to the plane in Which lies a ribbon of threads from the supply packages on the other leg of said frame.

4. A warping Creel for forming ribbons of threads from a plurality of thread supply packages, comprising a frame in the form of an in- Verted V, the legs of which frame are pivotally and adjustably attached to one another, means on each leg of the frame for supplying a bank of supply packages, rollers on said legs, one for each ribbon of threads made up of threads from a vertical row of supply packages, for guiding the threads coming from each bank of supply packages, and means for adjusting said rollers angularly with respect to the horizontal, the construction and arrangement being such that a ribbon of threads from the supply packages on one leg of said frame lies in a separate plane which is substantially parallel and in close proximity to the plane in Which lies a ribbon of threads Vfrom the supply packages on the other leg of said frame.

RALPH I-I. BALCH. THOMAS C. CAMPBELL. 

